BAB IV ANALISA DAN PEMBAHASAN

Transkripsi

1 50 BAB IV ANALISA DAN PEMBAHASAN.1. PERENCANAAN GEOMETRIK JALAN A. Data Perecaaa Type jala : IIIc Fugsi : Lokal Kecepata Recaa : 60 Km/Jam Koordiat titik : Tabel.1. Data titik koordiat No. TITIK X Y ( m ) ( m ) A ,08, ,08, ,08, B ,08, B. Perhituga Aliyeme Horisotal Cotoh Perhituga Legkug S-C-S pada Tikuga PI 1 Diketahui : a) Kecepata recaa (Vr) : 60 km/jam b) Koordiat titik : - Titik Awal A = ( ; ) - Titik P1 = ( ; ) - Titik P = ( ; ) x AW - 1 = ta x y - y 1 AW AW 50

2 51 Peyelesaia : 1. Meetuka Azimuth x AW - 1 = ta x AW y1 - y AW = ta = ta -1.3 = x 1 - = ta -1 - x1 y - y = ta = ta = Meetuka Jarak (d ) d aw - 1 = = ( x 1 x AW ) (y1 - y AW ) ( ) ( ) = m d 1 - = = ( x x1) (y1 - y1) ( ) ( ) = 6.81 m 1. Meetuka Sudut defleksi ( ) 1 = AW 1-1 = = 33.0 Utuk hasil perhituga selegkapya dapat dilihat pada halama berikutya

3 5 Tabel.. Tabel perhituga Sudut Defleksi PERHITUNGAN SUDUT DEFLEKSI ( D) SUDUT Jarak No. TITIK X Y a 1- A B A+,B+ A+,B- A-,B- A-,B+ JURUSAN D d ( m ) ( m ) ( o ) ( m ) ( m ) ( o ) ( o ) ( o ) ( o ) ( o ) ( o ) ( m ) A ,08, ,08, ,08, B ,08,889.00

4 53. Meetuka Jari-jari miimal ( R mi ) Utuk meetuka koefisie geseka melitag maksimal ( fm ) dega kecepata recaa km/jam diguaka rumus : fm = ( x Vr) = R mi = Vr 17( e mzx f max ) 60 = 17( ) = 11.0 m 3. Meetuka jari-jari legkug recaa ( R recaa ) R recaa =160 m, dega pertimbaga jari-jari tikuga disesuaika jarak atar titik da sudut defleksi.. Meetuka Kemiriga melitag ( e ) D = 13. R 13. = 160 = D max = ( ) Vr e = = ( ) 60 = 1.78 = e max. D e max. max Dmax D 0.1x = 0.0 = % D x 0.1x Meetuka pajag legkug spiral ( Ls mi ) Vr a) Ls = T = x 3 = 50 m 3.6

5 5 3 Vr Vr x e b) Ls = RcC C = 0.0 = m ( emax - e ) c) Ls = Vr 3.6 x re x x ( ) = x 0.05 = 5 m Maka megguaka Ls = 5 m 6. Meetuka koordiat Xs = Absis titik SC pada garis tage, jarak dari TS ke SC ( jarak lurus legkug peraliha ) Ys = Ordiat titik SC pada garis tegak lurus garis tage, jarak tegak lurus ke garis SC pada legkug. Ls Xs = Ls 1-0 x 5 = x160 =.98 m Ys = Ls 6 x Rc = 5 6 x160 = Meetuka sudut legkug spiral ( s ) s = = 90 x Ls x Rc 90 x 5 x 160 =.76

6 55 8. Meetuka pergesera tage terhadap spiral ( p ) Ls p = 6 Rc - Rc(1 cos s) 75 = - 160(1 cos.387) = Meetuka absis p pada garis tage spiral ( k ) 3 Ls k = Ls - 0Rc - Rc si s 3 5 = si.76 0 x160 = Meetuka pajag tage dari titik PI ke titik TS atau ke titik ST ( Ts ) Ts = (Rc + p) ta ½ + k = ( ) = m 11. Meetuka jarak dari PI ke busur ligkara ( Es ) Es = (Rc + p) sec ½ - Rc = ( ) = 7.08 m 1. Meetuka pajag busur ligkara ( pajag dari titik SC ke Cs ) ( Lc ) ( - s) Lc = 3.1 x Rc 180 = m 15. Meetuka L total L total = Lc + Ls = = m >> Utuk Hasil perhituga Lereg ( e ) da legkug dapat dilihat pada tabel berikut ;

7 56 Tabel.3. hasil perhituga Lereg ( e ) PERHITUNGAN LERENG ( e ) V.re c fm D D max e Ko tro l No. TITIK (Vr) Rmi Rre harga e m a x (Km/jam) ( m ) ( m ) ( m ) ( m ) ( % ) (<10%) A e<emax, OK! e<emax, OK! 8 B

8 57 Tabel.. hasil perhituga Legkug SCS SPIRAL - CIRCLE - SPIRAL Je is Pe rubaha No. TITIK Le gkug Pe rce pata LS-mi ( m ) LS-re c 0s Xs Ys p k Tt Tt ES DC LC LT ST Horiz otal (C) LS1 LS ( m ) ( o ) ( m ) ( m ) ( m ) ( m ) ( m ) ( m ) ( m ) ( o ) ( m ) ( m ) ( m ) (m/dt 3 ) A 1 S-C-S S-C-S B

9 58 # Cotoh Perhituga Pelebara Perkerasa Tikuga o Tikuga A PI1 B o Lebar recaa perkerasa 7 m o Utuk recaa pelebara perkerasa tikuga diguaka kedaraa recaa : kedaraa besar o Jarak atar gadar ( P ) = 18.9 m o Tojola depa kedara (A) = 1, m o Jumlah jalur lalu litas () = o Kebebasa sampig kedaraa (c) = 1 m o V recaa = 80 km/jam Peyelesaia : 1. Meghitug lebar litasa truk pada tikuga ( b ) b =, + R R P =, =.599m ,9. Meghitug lebar melitag akibat tojola depa ( Td ) Td = R AP A R = 900 1, , 900 = 0.06m 3. Meghitug lebar tambaha akibat kelaia pegemudi ( Z ) Z = = 0.105Vr R 0.105x = 0.8

10 59. Meghitug lebar perkerasa baru ( Bt ) B = (b + C) + ( 1) Td + Z = ( ) + ( 1) = m 5. Kotrol pelebara perkerasa B > B (perlu tambaha lebar perkerasa) b (tambaha lebar perkerasa) b = B B = = 1.1 m Utuk hasil perhituga selegkapya dapat dilihat pada halama berikutya ;

11 60 Tabel.5. hasil perhituga Pelebara Perkerasa pada tikuga Kedaraa recaa PENAMBAHAN LEBAR PERKERASAN Le ba r ja la Ke be ba sa Le ba r ja la Kotrol pe le ba ra Ke cil/ Jarak To jo la Pajag re caa Sampig baru Pe a mba ha Se dag/ as roda(p) de pa (A) total (L) (W c ) c b' Td Z Lajur (W m ) W m >W c Be sa r ( m ) ( m ) ( m ) ( m ) ( m ) ( m ) ( m ) ( m ) ( ) ( m ) ( m ) sedag Perlu 1.1 sedag Perlu 1.93

12 61 Bagia Lurus Ls = 5 m -% -% 0% -%.0% TS ( Sta. + 30) -%.0% -.1% SC ( Sta ) Legkug (Lc )= m E = % -E = % sisi luar tikuga sisi dalam tikuga.0% -.0% CS ( Sta.+33 ) Bagia Lurus Ls = 5 m.0% 0% -% -% -% E = % -% ST ( Sta. +58 ) A - 1 X = Y = STA = +399 = 3 R = 160 m V = 60 Km/jam Lc = m Es = 7.0 m Ts = 8.35 m s =.76 Xs =.98 m Ys = 0.65 m Ls = 5 m Peambaha Lebar Sampig = 1.10 m Gambar.1 Aliyeme Horizotal titik 1

13 6 PELEBARAN JALAN SAMPING 1.1m Gambar. legkug Horizotal jala titik 1

14 61.. PERHITUNGAN PERKERASAN JALAN..1. DATA PERENCANAAN a) Type perkerasa : Flexible pavemet b) Umur recaa : 10 tahu c) Curah huja rata-rata/tahu : mm/tahu d). Kecepata recaa : 60 km/jam e). Klasifikasi Jala : Lokal f). Kelas jala : III C g). Jumlah jalur-lajur : 1 jalur lajur h). Lebar Jalur : 6.00 meter i). Pertumbua lalu litas : 10 % j). Tahu survei : 01 k). CBR Taah Dasar : %... PERENCANAAN TEBAL PERKERASAN Tabel.6 Data Lalu Litas Haria No Jeis Kedaraa LHR 01 1 Seda, Jeep. St Wago,03.00 Oplet, pickup, Mii Bus Mikro truck, Mobil hatara Bus Truck Sedag As Truk Berat As Truck Tadem As 35.00

15 6 A. Perhituga Jumlah Kedaraa Pada Saat Umur Recaa Umur recaa jala adalah 10 tahu dega pertumbuha lalu litas 10 %. Perhituga utuk jumlah kedaraa pada umur recaa ( Tahu 0) ; 1. Seda Jeep, St Wago >> F = P ( 1 + i ) = 03 ( % ) 10 = Oplet Pickup Miibus >> F = P ( 1 + i ) = 509 ( % ) 10 = Mickro Truck, Mobil Hatara. >> F = P ( 1 + i ) = 96 ( % ) 10 = 1. Bus >> F = P ( 1 + i ) = 3 ( % ) 10 = 5. Truck Sedag As >> F = P ( 1 + i ) = 63 ( % ) 10 = Truck Berat As >> F = P ( 1 + i ) = 98 ( % ) 10 = 15

16 63 6. Truck Tadem As >> F = P ( 1 + i ) = 35 ( % ) 10 = 53 Tabel.7. Jumlah Kedaraa Pada Saat Umur Recaa No Jeis Kedaraa LHR 0 1 Seda, Jeep. St Wago 3,557 Oplet, pickup, Mii Bus Mikro truck, Mobil hatara 1 Bus 5 Truck Sedag As Truk Berat As 15 7 Truck Tadem As 5 B. Meetuka Nilai EAL ( Equivalet Stadart Axle) Tabel.8. Jeis Kedaraa da Kofiguarasi Sumbu No Jeis Kedaraa Kofigurasi Berat Sumbu ( To ) 1 Seda, Jeep. St Wago 50 ; Oplet, pickup, Mii Bus 3 : Mikro truck, Mobil hatara 3 : Bus 3 : Truck Sedag As 3 : Truk Berat As 3 : Truck Tadem As 5 : Perhituga utuk ilai EAL ( Equivalet Stadart Axle) 1. Seda, Jeep, St Wago Sumbu 50 ; 50 Berat to E = E Sumbu Depa + E Sumbu Belakag 0.5 x = x = =

17 6. Oplet Pickup Mii Bus, Sumbu 3 ; 66 Berat 5 to E = E Sumbu Depa + E Sumbu Belakag 0.3 x 5 = 8.16 = = x Mikro Truck, Mobil Hatara Sumbu 3 ; 66 Berat 5 to E = E Sumbu Depa + E Sumbu Belakag 0.3 x 5 = 8.16 = = x Bus Sumbu 3 ; 66 Berat 9 to E = E Sumbu Depa + E Sumbu Belakag 0.3 x 9 = 8.16 = = x Truck Sedag AS Sumbu 3 ; 66 Berat 8.3 to E = E Sumbu Depa + E Sumbu Belakag 0.3 x 8.3 = 8.16 = = x Truck Berat AS Sumbu 3 ; 66 Berat 18. to E = E Sumbu Depa + E Sumbu Belakag 0.3 x 18. = 8.16 = = x

18 65 7. Truck Tadem AS Sumbu 3 ; 66 Berat 5 to E = E Sumbu Depa + E Sumbu Belakag 0.3 x x 5 = 0.086x = =.7 Tabel.9. Nilai EAL ( Equivalet Stadert Axle ) No Jeis Kedaraa Kofigurasi Berat E Sumbu ( To ) Depa Belakag Total 1 Seda, Jeep. St Wago 50 ; Oplet, pickup, Mii Bus 3 : Mikro truck, Mobil hatara 3 : Bus 3 : Truck Sedag As 3 : Truk Berat As 3 : Truck Tadem As 5 : C. Perhituga Litas Ekivale Permulaa 1. Seda, Jeep, St Wago. LEP = LHR j j1 = 03 X 1 X = Oplet Pickup Mii Bus. LEP = LHR j j1 = 509 X 1 X = Mikro Truck, Mobil Hatara LEP = LHR j j1 = 96 X 1 X 0.86 =.75

19 66. Bus LEP = LHR j j1 = 3 X 1 X = Truck Sedag AS LEP = LHR j j1 = 63 X 1 X 0.17 = Truck Berat AS LEP = LHR j j1 = 98 X 1 X 5.06 = 9 7. Truck Tadem As LEP = LHR j j1 = 35 X 1 X.7 = 8.95 D. Perhituga Litas Ekivale Akhir ( LEA ) 1. Seda, Jeep, St Wago. LEP = LHR j j1 = 3557 X 1 X = 1.60

20 67. Oplet Pickup Mii Bus. LEA = LHR j j1 = 1 X 1 X = Mikro Truck, Mobil Hatara LEA = LHR j j1. Bus = 1 X 1 X 0.86 = 7.1 LEA = LHR j j1 = X 1 X 0.30 = Truck Sedag AS LEA = LHR j j1 = 389 X 1 X 0.17 = Truck Berat AS LEA = LHR j j1 = 15 X 1 X 5.06 = Truck Tadem AS LEA = LHR j j1 = 5 X 1 X. = 15.73

21 68 E. Perhituga Litas Ekivale Tegah ( LET ) LET = ½ x ( Σ LEP + Σ LEA ) = ½ x ( ) = 811 F. Perhituga Litas Ekivale Akhir ( LER ) LER = Σ LET x FP = 811 x ( UR / 10 ) = 811 Tabel..10. Tabel Perhituga LEP, LEA da LER No Jeis Kedaraa E C LHR 01 LHR 0 LEP LEA LET LER 1 Seda, Jeep. St Wago , , Oplet, pickup, Mii Bus Mikro truck, Mobil hatara Bus /*(LEP+LEA) LET X UR/10 5 Truck Sedag As Truk Berat As Truck Tadem As TOTAL 3, ,

22 69 G. Perhituga Tebal Perkerasa Jala Dalam perhituga perkerasa Megguaka Metode Aalisa Kompoe Bia Marga CBR Taah Dasar -- % --- DDT =. ( Nomogram ) >> LER = > Ipt = 1.5 ( Tabel ) >> Roughess ( AC ) ----> 1000 mm/km --- IPO ( Tabel ) >> Faktor Regioal 0.5 ` LAPIS_A1 a11 AC - WC (MS 7) 0.0 a1 AC - BC (MS 590) 0.35 a13 Lasto (MS 5) 0.3 a1 Lasto (MS 30) 0.30 a15 Asbuto/Lasbutag (MS 7) 0.35 a16 Asbuto/Lasbutag (MS 580) 0.31 a17 Asbuto/Lasbutag (MS 5) 0.8 a18 Asbuto/Lasbutag (MS 30) 0.6 a19 Hot Rolled Asphalt 0.30 a110 Aspal Macadam 0.6 a111 Lape (mekais) 0.5 a11 Lape (Maual) 0.0 a113 Buras,Burda/Burtu 0 LAPIS_A a0 Cocrete Base Coarse (CBC) K a1 Lasto Atas (MS 590) 0.8LASTON a Lasto Atas (MS 5) 0.6LASTON a6 Lasto Atas (MS 30) 0.LASTON a Lape (Mekais) a5 Lape (Maual) 0.19No a51 No 0.00No a6 Stabilitas Seme (Kt ) 0.15No a7 Stabilitas Seme (Kt 18) 0.13No a8 Stabilitas Kapur (Kt ) 0.15No a9 Stabilitas Kapur (Kt 18) 0.13No a10 Pod Macadam (CBR 100) 0.1No a11 Pod Macadam (CBR 60) 0.1No a1 Batu Pecah (A) CBR No a13 Batu Pecah (B) CBR No a1 Batu Pecah (C) CBR No 0.3No LAPIS_A3 a31 Cemet Treated Base (CTB) K a3 Sirtu (A) CBR a33 Sirtu (B) CBR a3 Sirtu (C) CBR a310 Selected Material (CBR 0) 0.10 a311 Selected Material (CBR 10) 0.08 a31 No 0.00

23 70 D1 D3 D Lapis Base Course Lapis Sub Base Course Lapis Sub Grade

24 71 G.1. Aalisa Desai Perkerasa Direcaaka ; - Sub Base Course Agregat Klas C CBR > 35 % Koefsie = Base Course Agregat Klas A CBR > 90 % Koefesie = Surface AC WC, AC BC - Koefesie = 0.0 >> Lapis Taah Dasar ( Sub Grade ) D3 CBR % DDT --. LER 811 FR ITP = 9.5 >> Lapis Sub Base Course ( D ) CBR 35 % DDT LER 811 FR ITP = 5 >> Lapis Base Course ( D1) CBR 90 % DDT LER 811 FR 0.5 ITP = 3.5

25 7 G.. Perhituga Tebal Perkerasa a. Tebal Lapis Permukaa ( Surface ) ITP = a1 x D1 3.5 = 0. x D1 D1 = 3.5/ 0. = 8.75 > Tebal miimum 5 cm Dipakai tebal 10 cm. b. Tebal Lapis Podasi Atas ( Base Course ) ITP = a1 x D1 + a x D 5 = 0. x x D = (5 ( 0. x 10) / 0.135) = 7 Tebal miimum 0 cm dipakai tebal miimum 0 cm c. Tebal Lapis Podasi Bawah ( Sub Base Course ) ITP = a1 x D1 + a x D + a3 x D3 9.5 = ( 0. x 10 ) + ( x 0 ) x 0.11 x D3 = ((9.5 ( 0. x 10) + ( x 0 ) / 0.11 = 5.5 Dipakai Tebal 30 cm AC-WC (MS 7) = cm AC-WC (MS 590) = 6 cm 5 cm Agregat A (CBR 100%) = 15 Agregat B (CBR 50%) = 0 cm Sub Grade CBR % Gambar.3. Susua Lapis Perkerasa Jala

26 5